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Performance of an oil-free vapour compression refrigeration system using R134a.

Number: pap. n. 317

Author(s) : LI Z., LIANG K., JIANG H.

Summary

By using a novel linear compressor, lubricant can be eliminated from a vapour compression refrigeration (VCR) system, which offers significant advantages in selection of refrigerants, miniaturization of refrigerator, and heat transfer improvement. In this study, performance of an oil-free VCR system was studied. The system has been constructed using a novel oil-free linear compressor, off-the-shelf condenser unit and an evaporator with electric heater. The oil-free VCR system was instrumented using R134a as refrigerant. The linear compressor was tested with strokes from 9 mm to 13 mm and pressure ratios from 2.0 to 4.0. The refrigerant charge is 300 g, and condenser outlet temperature was controlled from 40 °C to 55 °C. The experimental results show that the oil-free VCR system can achieve a cooling capacity of 311 W and a coefficient of performance (CoP) of 3.65 with a condenser temperature at 40°C, a pressure ratio of 2.5, and a stroke of 12 mm.

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Details

  • Original title: Performance of an oil-free vapour compression refrigeration system using R134a.
  • Record ID : 30025982
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.0317

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